<template>
    <div class="shopcar-container">
        <div class="goods-list">
            <!-- 商品列表项 -->
            <div class="mui-card" v-for="(item,i) in goodslist" :key="item.id">
                    <div class="mui-card-content">
                        <div class="mui-card-content-inner">
                            <mt-switch v-model="$store.getters.getGoodsSelected[item.id]" @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"></mt-switch>
                            <img :src="item.thumb_path" alt="">
                            <div class="info">
                                <h1>{{item.title}}</h1>
                                <p>
                                    <span class="price">￥{{item.sell_price}}</span>
                                    <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                    <!-- 问题：如何从购物车中获取商品的数量 -->
                                    <!-- 1.可以先创建一个空对象哎，然后循环购物车中所有商品的数据，把当前循环这条商品的ID作为对象的属性名，count值作为对象的属性值，这样，当把所有的商品循环一遍，就会得到一个对象：{88：2，89：1}-->
                                    <a href="#" @click.prevent="remove(item.id,i)">删除</a>                                    
                                </p>
                            </div>
                        </div>
                    </div>
            </div>
        </div>

        <!-- 结算区域 -->
        <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner jiesuan">
						<div class="letf">
                            <p>总计（不含运费）</p>
                            <p>已勾选<span class="red">{{$store.getters.getGoodsConutAndAmount.count}}</span>商品件，总价 ￥<span class="red">{{$store.getters.getGoodsConutAndAmount.amount}}</span></p>
                        </div>
                        <mt-button type="danger">去结算</mt-button>
					</div>                    
				</div>
		</div>
    </div>
</template>

<script>
import numbox from '../subcomponent/shopcar_numbax.vue'
export default {
    data () {
        return {
            goodslist:[]//购物车中所有商品的数据
        }
    },
    created () {
        this.getGoodsList()  
    },
    methods: {
        getGoodsList(){
            //1.获取到store中所有商品的id，然后拼接处一个用逗号分隔的字符串
            var idArr=[]
            this.$store.state.car.forEach(item=>idArr.push(item.id))
            //如果购物车中没有商品则直接返回，不需要请求数据接口，否则会报错
            if(idArr.length<=0){
                return;
            }
            //获取购物车商品列表
            this.$http.get('api/goods/getshopcarlist/'+idArr.join(",")).then(result=>{
                if(result.body.status==0){
                    this.goodslist=result.body.message
                }
            })
        },
        remove(id,index){
            //点击删除，把商品从store中根据传递的Id删除，同时，把当前组件的goodslist中，对应要删除的那个商品，使用index来删除
            this.goodslist.splice(index,1);
            this.$store.commit("removeFromCar",id);
        },
        selectedChanged(id,value){
            //每当点击开关把最新的开关状态，同步到store中
            console.log(id+'-----'+value)
            this.$store.commit("updateGoodsSelected",{id,selected:value})
        }
    },
    components: {
        numbox
    }
}
</script>

<style lang="scss" scoped>
.shopcar-container{
    background-color: #eee;
    overflow:hidden;
    .goods-list{
        .mui-card-content-inner{
            display:flex;
            align-items:center;
        }
        img{
            height:60px;
            width:60px;
        }
        h1{
            font-size:13px;
        }
        .info{
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            .price{
                color:red;
                font-size: bold;                
            }
        }
    }
    .jiesuan{
        display: flex;
        justify-content: space-between;
        align-items: center;
        .red{
            color: red;
            font-weight: bold;
            font-size: 16px;
        }
    }
}
</style>